var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

const expressJWT = require('express-jwt');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
const productRouter = require('./routes/product');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// app.use(expressJWT({ secret: 'doc2138', algorithms: ['HS256'] }).unless({
//   // expressJWT({}).unless(直接放行的目录)
//   path: [
//       '/',
//       /^\/html\/.*/,
//       /^\/css\/.*/,
//       /^\/js\/.*/,
//       /^\/img\/.*/,
//       '/shop/getList',
//   ]
// }));



app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/product', productRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {

  console.log(err.name); // 输出错误名

  console.log(err.message);

  // 如果没有token 返回一个 对象
  if (err.name === 'UnauthorizedError') {
    return res.status(401).send({ msg: 'token错误', success: 0, status: 401 });
  }

  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
